Earth working – With drive means for tool or cleaner – Tool rotated by attendant
Reexamination Certificate
2007-02-08
2011-11-08
Pezzuto, Robert (Department: 3671)
Earth working
With drive means for tool or cleaner
Tool rotated by attendant
C172S371000
Reexamination Certificate
active
08051918
ABSTRACT:
A method and apparatus for weed removal, wherein using a depilatory method (new use) with an extension spring having an arcuate axis and being driven in a rotational sliding motion relative to the soil-bearing weed to be removed. For this purpose the apparatus is equipped with a spring (10), having an arcuate axis that is bent at 180 degrees and the spring is made in the shape of a spring of variable rate, so that the spring has a large diameter in its middle zone and conically reduced cylindrical ends of smaller diameter.
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Pezzuto Robert
Troutman Matthew
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